Tube-compressor.



A J. FREY.

TUBE COMPRESSOR.

APPLICATION FILED 1AN.6| I919.

Patented Mar. 18, 1919.

vwa ntoz $1,, /l wi e M42515 llti AUGUST JOSEPH FILEY, 0F BROOKLYN, NEW YORK, AS$IGNOB T0 BRASS GOODS MFG 00.,

0F BROOKLYN, NEW YORK, A CORPDRATION OF NEW YQ. I

TUBE-COMPRESSOR.

Specification of Letters Patent.

Patented Mar; 118, X919.

Application filed January 6, 1919. Serial No. 289,785.

To all whom it may concern:

Be it known that 1, AUGUST JOSEPH FREY, a citizenof the United States, and a resident of'Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Tube- Compressors, of which the following is a specification.

My invention relates to the construction of compression clamps designed to apply clamping pressure by means of a sheet metal cam piece provided with actuating arms, said cam piece being mounted in arms or cars rising from a suitable base and being arranged to act 11 on the clamping jaw.

An example of t 1e class of device to which my invention relates isdescribed in my prior Patent No. 1,217,433.

The object of my present invention is to avoid the tendency of the end of the sheet metal piece engaging the jaw by its edge and constituting the cam to yield or spring back under the actuating pressure when the aw is engaged with a piece of tubing which exerts considerable resistance to the clamping pressure and to accomplish this object without adding to the cost of sheet metal stoizkv re uired to make up the device.

lo this end my invention consists in the improved construction of sheet metal cam piece and actuating devices whereby the cam is effectually stayed against any tendency to yield orspring back when applying pressure to the clampin jaw as hereinafter more particularly described and claimed.

F igure'l is a side elevation of a device embodying my invention and shows the jaw 0 en.

Fig. 2 is a plan of the same.

Fig. 3 is a longitudinal section on the line 33, Fig. 2, and shows the jaw closed.

Fig. 4 is a plan of the sheet metal blank as formed preliminarily to bending into shape to make the complete jaw operating device.

Fig. 5 illustrates in side elevation a modification in the manner of combining the cam and actuating arm.

Fig. 6 is a plan of the same.v

Fig. 7 is a longitudinal section on the line 77, Fig. 6, and Fi 8 shows in plan the construction of the s e et metal blank from which the cam and actuating arms are formed.

In the drawings 1 and 2 represent respectively two clamping jaws formed or sired wa connected in any desired way, as for instance of a single piece of sheet metal provided at a with an opening for the insertion of the tubing to be clamped. 7 indicates the ears or brackets rising from the base which carries the jaw 2 and combined with or mounted upon said base in any desired way and made of any suitable material but provided, as shown near their upper ends with openings to receive the pintles (S cxtenda5 ing from the cam piece 5 and pivoted in said openings.

9, 10 indicate respectively the two operating 01' actuating arms of the cam which permlt it to be operated by the thumb or finger 7 to either compress or clamp the jaw 1 or to release the same. The arms 3) and 10 and the cam are made out of a single piece or strip of sheet metal which is bent up in. any dcto form the operating arms and a 7 cam 5 w ich engages the jaw by its edge or free end of the metal strip. As will be seen, when the arm 10 is pressed down to apply pressure to the jaws by means of the cam, there will be, in the case of heavy, thick, or 3 resisting tubing,- a tendency of the free end of the sheet metal strip forming cam 5 to spring or move back under the pressure, with the result that the object may be insuiliciently clamped or that the sheet metal 5, of the cam may be sprung or bent back so as to render the device useless.

The object of my invention is to overcome this tendency and to secure an efi'ective, pressure upon the clamping jaw l by the operation of the arm 10 but without increasing the length of the sheet metal strip. To this end my invention consists in combining with the cam and operating or actuating devices a strut or stay extending from at the cam near its engaging end back to the operating or actuating arm 10 by which the pressure is applied; and consisting of a tongue'll cut and bent out from one member of the structure forming the sheet metal cam and operating arm, as for instance from the member 5, the free end of said tongue engaging with the member 10 as shown in Fig. 1. The converse arrangement, however, may be employed as shown me in Figs. 58 in which the tongue is cut out from the sheet metal forming the member 10 and is arranged to engage the member 5 by its free end. Said tongue used as the I brace may have a flat end engaging the flat Rte surface ,of the cam when the parts are bent up to shape and when said tongue is formed out of the portion of the sheet metal construction in which the arm is embodied; or the converse arrangement may be employed, the tongue in this instance being cut out of the portion of the plate or sheet metal constituting the cam while its free end may be formed with a teat or projection 12 adapted to enter a small perforation of the arm 10 so as to hold the free end against slipping on the under surface of thearm 10 when the pressure is applied.

By the above described construction the cam is eliectually reinforced against bending under the pressure applied for compressing the tube and, as will be seen, no additional parts or additional metal is required when the sheet metal construction is employed since the tongue forming the brace or strut may be struck up or cut out of the metal comprising the cam and operating arm.

What I claim as my invention is 1. In a compression clamp of the character described, the combination with the sheet metal cam and sheet metal operating arm formed in one piece therewith, of a sheet metal strut connecting the cam and arm and consisting of a sheet metal tongue out out of the portion of sheet metal blank forming one of said members and bent to extend from one to the other.

2. In a compression clamp of the character described, the combination with a sheet metal cam and operating arm formed of a single piece of sheet metal and a connecting strut consisting of a sheet metal tongue formed and bent out of the material of the blank from which the arm and cam are formed, said tongue having a teat or projection at one end entering a perforation in one of said members and extending from one to the other to form a strut or brace between them.

3. In a compression clamp of the character described, a sheet metal operating arm and cam connected by a sheet metal strut and all formed out of one piece of sheet metal, said strut extending from the free end of the sheet metal piece near but removed from the free edge of the sheet metal which constitutes the engaging surface of the cam to the operating arm.

Signed at New York, in the county of Kings and State of New York, this 2nd day of January, A. D. 1919.

AUGUST JOSEPH FREY.

Witnesses:

HAZEL BRILL, ETHEL B. HALLER. 

